Monitoring changedmonitoring-usage
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13351335* OpenTelemetry export to your backend is opt-in and requires explicit configuration. For Anthropic's separate operational telemetry and how to disable it, see [Data usage](/docs/en/data-usage#telemetry-services)
13361336* Raw file contents and code snippets are not included in metrics or events. Trace spans are a separate data path: see the `OTEL_LOG_TOOL_CONTENT` bullet below
1337* When authenticated via OAuth, `user.email` is included in telemetry attributes. If this is a concern for your organization, work with your telemetry backend to filter or redact this field
1337* When authenticated via OAuth, `user.email` is included in telemetry attributes, sent only to the OTel endpoint you configure, never to Anthropic. If this is a concern for your organization, work with your telemetry backend to filter or redact this field
13381338* User prompt content is not collected by default. Only prompt length is recorded. To include prompt content, set `OTEL_LOG_USER_PROMPTS=1`
13391339* Assistant response text is not collected by default. Only response length is recorded. To include response text, set `OTEL_LOG_ASSISTANT_RESPONSES=1`. Like all OpenTelemetry data from Claude Code, the response text is sent only to the OTel endpoint you configure, never to Anthropic. When this variable is unset, `OTEL_LOG_USER_PROMPTS` is used as a fallback, so set `OTEL_LOG_ASSISTANT_RESPONSES=0` if you want prompt content without response content
13401340* Tool input arguments and parameters are not logged by default. To include them, set `OTEL_LOG_TOOL_DETAILS=1`. For Claude Desktop's built-in servers, in sessions Claude Desktop owns, `tool_decision` and `tool_result` carry the `mcp_server_name`/`mcp_tool_name` pair, host-authored names rather than argument content, even with the flag off. The exception requires Claude Code v2.1.214 or later. This data is sent only to the OTEL endpoint you configure, never to Anthropic. Arguments may still contain sensitive values, so configure your telemetry backend to filter or redact these attributes as needed. When enabled:
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